The old default was 8.

(followup to r4145) Non-functional change:

Change the os_atomic_increment() and os_compare_and_swap() functions
to macros to avoid artificial limitations on the types of those
functions' arguments. As a consequence typecasts from the source
code can be removed.

Also remove Google's copyright from os0sync.ic because that file no longer
contains code from Google.

Approved by:	Marko (rb://88), also ok from Inaam via IM

innodb_additional_mem_pool_size, because nothing will
be allocated from mem_comm_pool.

mem_pool_create(): Remove the assertion about size.  The function will
work with any size.  However, an assertion would fail in ut_malloc_low()
when size==0.

mem_init(): When srv_use_sys_malloc is set, pass size=1 to mem_pool_create().

mem0mem.c: Add #include "srv0srv.h" that is needed by mem0dbg.c.

If lower_case_table_names=1, MySQL will pass the table names in lower case.
Thus, we can use a binary comparison (strcmp) in the hash table.

rb://87 approved by Heikki Tuuri, to address Bug #41676 and Issue #167.

malloc(), realloc(), free() when innodb_use_sys_malloc is set.

ut_free_all_mem(): If innodb_use_sys_malloc is set, do nothing,
because then ut_mem_block_list_inited will never be set.

log_init(): Use mem_alloc() instead of ut_malloc(), so that the
memory will be freed.  (Tested with Valgrind, although it is not
clear why the memory would be freed.)

rb://86 approved by Heikki Tuuri and Ken Jacobs.  This addresses Issue #168.

Non-functional change: Fix a compilation warning introduced in r4144:

gcc -DHAVE_CONFIG_H -I. -I../../include -I../../include -I../../include -I../../regex -I../../storage/innobase/include -I../../sql -I.   -Werror 	 -Wall -g   -MT libinnobase_a-sync0arr.o -MD -MP -MF .deps/libinnobase_a-sync0arr.Tpo -c -o libinnobase_a-sync0arr.o `test -f 'sync/sync0arr.c' || echo './'`sync/sync0arr.c
cc1: warnings being treated as errors
sync/sync0arr.c: In function 'sync_array_object_signalled':
sync/sync0arr.c:869: warning: pointer targets in passing argument 1 of 'os_atomic_increment' differ in signedness

This patch changes the innodb mutexes and rw_locks implementation.
On supported platforms it uses GCC builtin atomics. These changes
are based on the patch sent by Mark Callaghan of Google under BSD
license. More technical discussion can be found at rb://30

Approved by: Heikki

Remove mysql-test/patches/bug35261.diff because that bug has been fixed
in the MySQL repository.

that was introduced in r4036, to address Issue #161.

free() is not the same as ut_free().  ut_free() pairs with ut_malloc(),
not malloc().  free() pairs with malloc() and some other functions.

Both are minor changes:
1) Compiler error introduced in r4072: double ';' at the end.
2) Warning introduced in r3613: \mem\mem0pool.c(481) : 
warning C4098: 'mem_area_free' : 'void' function returning a value

Approved by: Sunny (IM)

Fix the failing innodb-zip test to restore the environment as it was before
the test execution because a newly added feature in the mysql-test framework
does check for this.

Fix a mysql-test failure in innodb-zip:

main.innodb-zip                          [ fail ]
        Test ended at 2009-02-02 18:13:25

CURRENT_TEST: main.innodb-zip
mysqltest: At line 160: Found line beginning with --  that didn't contain a valid mysqltest command, check your syntax or use # if you intended to write a comment

recv_read_cp_info_for_backup(), recv_scan_log_seg_for_backup():
These functions are only called by InnoDB Hot Backup.

in the function comment.  Parameters are not read from a file "srv_init".

Add ChangeLog entry for the change in r4072.

Adjust the failing patch patches/information_schema.diff.

btr_search_disabled: Rename to btr_search_enabled and change the type
to char, so that it can be directly linked to the MySQL parameters.
Note that the variable is protected by btr_search_latch and
btr_search_enabled_mutex, a new mutex introduced in this patch.

btr_search_enabled_mutex: A new mutex, to protect btr_search_enabled
together with btr_search_latch.

buf_pool_drop_hash_index(): New function, to be called from
btr_search_disable().

btr_search_disable(), btr_search_enable(): Fix bugs.  These functions
were previously unused.

btr_search_guess_on_hash(), btr_search_build_page_hash_index():
Check btr_search_enabled once more, while holding btr_search_latch.

btr_cur_search_to_nth_level(): Note that the reads of btr_search_enabled
may be dirty and explain why it should not be a problem.

innobase_adaptive_hash_index: Remove. The variable btr_search_enabled will be used directly instead.

innodb_adaptive_hash_index_update(): New function, an update callback for
innodb_adaptive_hash_index.  This will call either btr_search_disable()
or btr_search_enable() when the value is assigned.  The functions will
be called even if the value does not appear to be changed, e.g., when
setting from TRUE to TRUE or FALSE to FALSE.

rb://85 approved by Heikki Tuuri.  This addresses Issue #163.

a gcc warning about an assertion that trivially holds.
The warning was introduced in r4061, in the merge of
branches/innodb+ -r4053.

ibuf_insert(): Let an assertion fail if ibuf_use is unknown.

Implement the global variable innodb_change_buffering, with the
following values:

none - buffer nothing
inserts - buffer inserts (the default)

Approved by Ken Jacobs.

All InnoDB related tests passed on Windows, except
known failure in partition_innodb_semi_consistent.

The inadvertent change to btr0sea.c in this commit is reverted in r4060.

  ------------------------------------------------------------------------
  r4035 | vasil | 2009-01-26 09:26:25 -0600 (Mon, 26 Jan 2009) | 23 lines

  branches/5.1:

  Merge a change from MySQL:

    ------------------------------------------------------------
    revno: 2646.161.4
    committer: Tatiana A. Nurnberg <azundris@mysql.com>
    branch nick: 51-31177v2
    timestamp: Mon 2009-01-12 06:32:49 +0100
    message:
      Bug#31177: Server variables can't be set to their current values

      Bounds-checks and blocksize corrections were applied to user-input,
      but constants in the server were trusted implicitly. If these values
      did not actually meet the requirements, the user could not set change
      a variable, then set it back to the (wonky) factory default or maximum
      by explicitly specifying it (SET <var>=<value> vs SET <var>=DEFAULT).

      Now checks also apply to the server's presets. Wonky values and maxima
      get corrected at startup. Consequently all non-offsetted values the user
      sees are valid, and users can set the variable to that exact value if
      they so desire.

ut_sprintf_timestamp_without_extra_chars(), ut_get_year_month_day(),
log_reset_first_header_and_checkpoint(): These functions are only used
in InnoDB Hot Backup.

Adjust the paths in innodb_lock_wait_timeout.diff with a recent rename of
the test/result files in the MySQL tree.

introduced in r4036.
Do not call buf_block_get_space(), buf_block_get_page_no()
unless the block state is BUF_BLOCK_FILE_PAGE.

This bug was reported by Michael.

committed in r4045.

assertion failure that was accidentally introduced in r4036.
Instead of calling buf_block_get_frame(), which asserts that the
block must be buffer-fixed, access block->frame directly.  That
is safe, because changes of block->page.state are protected by
the buffer pool mutex, which we are holding.

This bug was reported by Michael.

read zip_size while still holding block_mutex.

Adjust the paths in innodb_file_per_table.diff with a recent rename of
the test/result files in the MySQL tree.

within UNIV_DEBUG. The two remaining callers in non-debug builds,
btr_search_guess_on_hash() and btr_search_validate(), were rewritten
to call buf_page_hash_get().

To implement support for a resizeable buffer pool, the function
buf_block_align() had been rewritten to perform a page hash lookup in
the buffer pool. The caller was also made responsible for holding the
buffer pool mutex.

Because the page hash lookup is expensive and it has to be done while
holding the buffer pool mutex, implement buf_block_align() by pointer
arithmetics again, and make btr_search_guess_on_hash() call it. Note
that this will have to be adjusted if the interface to the resizeable
buffer pool is actually implemented.

rb://83 approved by Heikki Tuuri, to address Issue #161.

As a deviation from the approved patch, this patch also makes
btr_search_validate() (invoked by CHECK TABLE) check that
buf_pool->page_hash is consistent with buf_block_align().

that was introduced in r4030.

  ------------------------------------------------------------------------
  r4032 | marko | 2009-01-23 15:43:51 +0200 (Fri, 23 Jan 2009) | 10 lines

  branches/5.1: Merge r4031 from branches/5.0:

  btr_search_drop_page_hash_when_freed(): Check if buf_page_get_gen()
  returns NULL.  The page may have been evicted from the buffer pool
  between buf_page_peek_if_search_hashed() and buf_page_get_gen(),
  because the buffer pool mutex will be released between these two calls.
  (Bug #42279, Issue #160)

  rb://82 approved by Heikki Tuuri
  ------------------------------------------------------------------------

This was noticed while investigating Issue #160.

This will help trim the dependencies of InnoDB Hot Backup.

recv_recovery_from_checkpoint_start(): Rename to
recv_recovery_from_checkpoint_start_func(), and remove the two first
parameters unless UNIV_LOG_ARCHIVE is defined.  Define and use
the auxiliary macros TYPE_CHECKPOINT and LIMIT_LSN in the function.

struct recv_sys_struct: Remove archive_group unless UNIV_LOG_ARCHIVE
is defined.

Do not define LOG_ARCHIVE unless UNIV_LOG_ARCHIVE is defined.

Add ChangeLog entries for the bugfixes in r4004 and r4005.